SLVSCN2B June   2014  – July 2015 TPS22959

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics, VBIAS = 5.0 V
    6. 7.6 Electrical Characteristics, VBIAS = 2.5 V
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 On/off Control
      2. 8.3.2 Input Capacitor (CIN)
      3. 8.3.3 Output Capacitor (CL)
      4. 8.3.4 VIN and VBIAS Voltage Range
    4. 8.4 Device Functional Modes
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 VIN to VOUT Voltage Drop
        2. 9.2.2.2 Inrush Current
        3. 9.2.2.3 Thermal Considerations
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Integrated Single Channel Load Switch
  • VBIAS Voltage Range: 2.5 V to 5.5 V
  • VIN Voltage Range: 0.8 V to 5.5 V
  • Ultra Low RON Resistance
    • RON = 4.4 mΩ at VIN = 5 V (VBIAS = 5 V)
  • 15 A Maximum Continuous Switch Current
  • Low Quiescent Current
    • (20 µA for VBIAS = 5 V)
  • Low Shutdown Current
    • (1 µA for VBIAS = 5 V)
  • Low Control Input Threshold Enables Use of 1.2 V or Higher GPIO
  • Controlled and Fixed Slew Rate Across VBIAS and VIN
    • tR = 2663 µs at VIN = 5 V (VBIAS = 5 V)
  • Quick Output Discharge (QOD)
  • SON 8-Pin Package with Thermal Pad
  • ESD Performance Tested per JESD 22
    • 2-kV Human-Body Model (HBM)
    • 1-kV Charged-Device Model (CDM)

2 Applications

  • Servers
  • Medical
  • Telecom Systems
  • Computing
  • Industrial Systems
  • High Current Voltage Rails

3 Description

The TPS22959 is a small, ultra-low RON, single channel load switch with controlled turn on. The device contains an N-channel MOSFET that can operate over an input voltage range of 0.8 V to 5.5 V and supports a maximum continuous current of 15 A.

The combination of ultra-low RON and high current capability of the device makes it ideal for driving processor rails with very tight voltage dropout tolerances. The controlled rise time of the device greatly reduces inrush current caused by large bulk load capacitances, thereby reducing or eliminating voltage droop on the power supply. The switch can be independently controlled via the ON pin, which is capable of interfacing directly with low-voltage control signals originating from microcontrollers or low voltage discrete logic. The device further reduces the total solution size by integrating a 224-Ω pull-down resistor for quick output discharge (QOD) when the switch is turned off.

The TPS22959 is available in a small 3.00 mm x 3.00 mm WSON-8 package (DNY). The DNY package integrates a thermal pad which allows for high power dissipation in high current and high temperature applications. The device is characterized for operation over the free-air temperature range of –40°C to 105°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS22959 WSON (8) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Simplified Schematic

TPS22959 simp_sch_SLVSCN2.gif

RON vs VIN (VBIAS = 5 V, IOUT = –200 mA)

TPS22959 D008_TPS22969.gif